| 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4ParametrizedHadronicVertex.cc,v 1.6 2006/06/29 20:57:40 gunter Exp $ |
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| 28 | // GEANT4 tag $Name: $ |
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| 29 | // |
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| 30 | // -------------------------------------------------------------- |
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| 31 | #include "G4ParametrizedHadronicVertex.hh" |
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| 32 | #include "G4HadFinalState.hh" |
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| 33 | #include "G4ParticleChange.hh" |
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| 34 | |
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| 35 | G4VParticleChange * G4ParametrizedHadronicVertex:: |
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| 36 | ApplyYourself(G4Nucleus & theTarget, const G4Track &thePhoton) |
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| 37 | { |
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| 38 | static G4ParticleChange theTotalResult; |
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| 39 | |
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| 40 | theTotalResult.Clear(); |
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| 41 | theTotalResult.ProposeLocalEnergyDeposit(0.); |
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| 42 | theTotalResult.Initialize(thePhoton); |
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| 43 | theTotalResult.ProposeTrackStatus(fAlive); |
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| 44 | G4double theKineticEnergy = thePhoton.GetKineticEnergy(); |
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| 45 | G4HadFinalState * aR = 0; |
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| 46 | G4HadProjectile thePro(thePhoton); |
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| 47 | if(CLHEP::RandBit::shootBit()) |
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| 48 | { |
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| 49 | if(theKineticEnergy<20*GeV) aR = theLowEPionMinus->ApplyYourself(thePro, theTarget); |
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| 50 | else aR = theHighEPionMinus->ApplyYourself(thePro, theTarget); |
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| 51 | } |
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| 52 | else |
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| 53 | { |
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| 54 | if(theKineticEnergy<20*GeV) aR = theLowEPionPlus->ApplyYourself(thePro, theTarget); |
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| 55 | else aR = theHighEPionPlus->ApplyYourself(thePro, theTarget); |
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| 56 | } |
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| 57 | aR->SetTrafoToLab(thePro.GetTrafoToLab()); |
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| 58 | if(aR->GetStatusChange()==stopAndKill) |
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| 59 | { |
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| 60 | theTotalResult.ProposeTrackStatus(fStopAndKill); |
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| 61 | theTotalResult.ProposeEnergy( 0.0 ); |
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| 62 | } |
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| 63 | if(aR->GetStatusChange()==suspend) |
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| 64 | { |
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| 65 | theTotalResult.ProposeTrackStatus(fSuspend); |
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| 66 | } |
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| 67 | if(aR->GetStatusChange()!=stopAndKill ) |
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| 68 | { |
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| 69 | G4double newWeight = aR->GetWeightChange()*thePhoton.GetWeight(); |
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| 70 | theTotalResult.ProposeParentWeight(newWeight); |
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| 71 | if(aR->GetEnergyChange()>-.5) theTotalResult.ProposeEnergy(aR->GetEnergyChange()); |
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| 72 | G4LorentzVector newDirection(aR->GetMomentumChange().unit(), 1.); |
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| 73 | newDirection*=aR->GetTrafoToLab(); |
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| 74 | theTotalResult.ProposeMomentumDirection(newDirection.vect()); |
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| 75 | } |
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| 76 | |
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| 77 | theTotalResult.ProposeLocalEnergyDeposit(aR->GetLocalEnergyDeposit()); |
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| 78 | theTotalResult.SetNumberOfSecondaries(aR->GetNumberOfSecondaries()); |
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| 79 | |
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| 80 | G4ThreeVector it(0., 0., 1.); |
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| 81 | G4double what = 2.*pi*G4UniformRand(); |
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| 82 | for(G4int i=0; i<aR->GetNumberOfSecondaries(); i++) |
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| 83 | { |
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| 84 | G4LorentzVector theM = aR->GetSecondary(i)->GetParticle()->Get4Momentum(); |
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| 85 | theM.rotate(what, it); |
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| 86 | theM*=aR->GetTrafoToLab(); |
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| 87 | aR->GetSecondary(i)->GetParticle()->Set4Momentum(theM); |
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| 88 | G4double time = aR->GetSecondary(i)->GetTime(); |
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| 89 | if(time<0) time = thePhoton.GetGlobalTime(); |
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| 90 | G4Track* track = new G4Track(aR->GetSecondary(i)->GetParticle(), |
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| 91 | thePhoton.GetGlobalTime(), |
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| 92 | thePhoton.GetPosition()); |
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| 93 | G4double newWeight = thePhoton.GetWeight()*aR->GetSecondary(i)->GetWeight(); |
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| 94 | track->SetWeight(newWeight); |
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| 95 | theTotalResult.AddSecondary(track); |
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| 96 | } |
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| 97 | return &theTotalResult; |
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| 98 | } |
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